Oslo 's transportation is well-organized, efficient, comfortable and (surprise!) expensive. You do get good value for your money, though.

All of Oslo's three airports (map) serve both Norwegian domestic and international destinations:

Oslo International Airport (OSL)
A t Gardermoen in the town of Ullensaker, 47 km (29 miles) north of Oslo (map), is Oslo's oldest and largest airport, serving the major scheduled airlines with international and intercontinental routes.

Special Flytoget airport express trains whisk you between the airport and Oslo S in about 20 minutes; main line trains go as well, taking more time but less money. Special Flybussen airport buses provide convenient service slower and slightly cheaper than the express trains.

Sandefjord Airport Torp (TRF)
Torp, 85 km (53 miles) south of Oslo (map), serves European international flights by KLM, Ryanair, Widerøe, Wizz Air, and charter flight operators AmiSol Travel, Apollo, Nazar, Star Tour and Ving.

Torp Airport can be reached by Torp Expressen buses from Oslo's Bussterminal (see below).

Moss Airport Rygge (RYG)
Moss, 59 km (37 miles) south of Oslo (map), serves Norwegian Air Shuttle and Ryanair flights, as well as Apollo, Star Tour and Ving charter flights.

Moss Airport can be reached by special Rygge Expressen buses from Oslo's Bussterminal (see below).

Oslo Central Train Station & Bus Terminal
Oslo's main train station, Oslo Sentralstasjon, often called just "Oslo S", is the hub of the city's transport network. Right next to it, northeast across the street, is the Oslo Bussterminal, Oslo's central bus terminal, with buses serving the region, the country, and destinations in Sweden.

Metro, City Bus & Tram
Just outside Oslo S is a Metro station, stops for many trams and city buses, and a small Tourist Information Officebeneath the prominent Trafikanten tower. Buy bus and tram tickets from machines in the Tourist Information Office.

Ferryboats
Comfortable, punctual ferryboats serve numerous destinations in Oslo harbor and farther away. The one you'll most likely take is the one for the short voyage to Bygdøy, across the harbor, to see the maritime and Norwegian Folk museums.